Combination lock



Sept. 20, 1938. J. HEINZLE COMBINATION LOCK Filed Nov. 17, 1957 2 sheets-sheet 1 INVENT OR. oy/v f/El/VZLE Sept. 20, 1938. J. H EINZLE COMBINATION LOCK Filed Nov. 17, 1937 2 Sheets-Sheet 2 IIIIIIA INVENTOR. 1 J06!!! ////VZLE Patented Sept. 20, 1938 UNITED STATES PATENT OFFICE COMBINATION LOCK John Heinzle, Arickaree, Colo. I Application November 17, 1937, Serial No. 174,978

" .4 Claims. (01. 70-133) This invention relatesto locks and particularly to'combination locks in which a part is turned to a' certain predetermined position in order to permit thelock to be opened. 5 One object of the invention is to provide'a combination lock improved in various particulars to produce accuracy and reliability, as well as sim- 'plicity of construction and convenience of operation.

' l "Another object of the invention is to construct a combination lock which is to be used in connection with doors, drawers, cabinets, safes, lockers and the like. g

,The nature of the present invention and its dis- 15 tinguishing features and advantages will appear as the description proceeds.

" In the drawings:

Figure 1' is a plan view of the numbered dial of a combination lock embodying the present im- 20 provement.

I Figure 2 is aysectionalview of the lock as applied,'the section takenon line 2-2 of Figure 1.

5 Figures3, 4, 5, 8, 9. and are detail views of the various discs controlling the lock combination.

'25 A Figure 6 shows the mounting of the latch bolt 1 in the lock case. Figure 7 is a sectional view of the look as show 7 on line"II of Figure 2.

C Figure 11 is a cross sectional view taken on line 30 III-II of Figure 2.

I Figure 12 is aplan view of the dial pointer. Q Figure 13 shows the'disc engaging flange of the slotted sleeve. I Figure 14 shows a modification of a two-bolt combination look.

I Figure 15 is a longitudinal sectional view of the lock taken on line I5--I5 of Figure 14 as applied to, a door.

Figure 16 is a transverse sectional view taken 40 online IG-IG of Figure 14.

Figure 17 is a detail sectional View of the lock comprising the latch bolt and the superimposed combination discs taken on line I'I-I'I of Figure 14.

45 Inthe construction shown in Figures 1 to 13, the

, reference character I designates the casing of the combination lock. Attached to the bottom plate 2 of the casing, in spaced apart relation, by bolts 3 is a disc 4, constituting the lowermost of a num- 50 her of superimposed discs described in detail hereinafter. I f'I'he disc 4 is provided with a sleeve-like, up-

. wardly extending projection 5 encircling a centrally locatedbore 6. A radial slot I extends into the periphery of the disc, close to the projection 5,

while a lug 8, diametrically opposite the slot I, bears a pivot pin 9. Also on the disc 4, on its lower face, is an arcuate enlargement I0, serving as a guide for a rectangular latch bolt I I.

The latch bolt H slides upon the bottom plate 2 through a fore-end opening I2, forward and back, guided by the enlargement ID of the disc 4 on one side, and controlled by spring means I3 on the other side, one end of the spring I3 secured to the main plate 2, while its free end engages in a recess 10 I4 of the latch bolt.

An oblong opening I5 extends longitudinally from the center of the latch bolt I I towards the inner end thereof, it being provided with a cam notch I6 midway of the opening I5. In spaced 15 apart relation to the opening I5, and mounted centrally upon the latch bolt I I is a lengthwise extending lug II, the purpose of which will be later described.

A hollow latch operating boss I8, preferably 20 having a square cross sectional passage, is loosely inserted in the opening I5 of the latch bolt, the boss I8 being provided with a cam projection I9 engaging in the cam notch I6 of the latch bolt opening I5.

Sleeved over the boss I8 is the hub-like member 5 of the disc 4. Superimposed and adjustable with the disc I, are a series of combination discs, as indicated in the drawings by the numerals 20, 2 I, 22, 23 respectively. Each of said discs, with the exception of the uppermost, is provided with arcuate slots 24 of various lengths, while central bores 25 for each disc serve to closely but loosely fit the individual discs over the hub member 5. Also each disc is provided with a corresponding radial slot 26 to fit over the lug I'I. Diametrically opposite each slot 26, the discs 22, 23, are provided with peripheral extensions 21 to receive the pivot pin 9 of the lowermost disc 4.

The uppermost disc 22 is provided with a ring 28 4 closely but rotatably fitting over the hub member 5, and has two oppositely faced notches 29 in its inner face. Engaging the hub member 5, and consequently the latch operating boss I8, is a latch actuator or key 30 correspondingly shaped to closely fit into the bore of the latch operating boss I8, the actuator preferably being manipulated by a thumb nut 41 detachably mounted thereon. Loosely fitted over the latch actuator 30 is a sleeve 3I having slots extending from one end at oppo- 5 site Doints.

The lower end of the sleeve 3| terminates in a flange 32 having two opposite downwardly projecting extensions 33 to engage the recesses 34 of the rim 28 of the uppermost disc 22. A metal plate 36 is fixed over the customary door key opening carrying a dial plate 31 provided with a peripheral arcuate slot 38 for properly setting the dial plate 31 by a bolt 39.

The dial plate has a hub-like member 40 fitted over the sleeve 3| and confined in its operation between the flange 32 and an inner ring-like enlargement by a compression spring 35.

A sleeve 4! having its upper reduced end pro- Vided with slight inward projections is disposed over hub member 40. A pointer 32 having its ring-like body slipped over hub member 40, is held by sleeve 4! in set position, due to the pointer being provided with diametrically opposite, inwardly directed extensions 33 engaging in correspondingly arranged slots in the lower end of the sleeve 4!.

A disc 45 engages over the slightly protruding end of sleeve 3i by engaging the slots of the sleeve 3|.

Figures 14 to 17 inclusive, show a modified twobolt combination lock in which the reference numeral 55 designates the casing and 5lthe latch bolt. Fixed on the end of, the bolt 5! is a block 52; the bolt slides back and forth through the lock opening 53 upon the main plate 54 of the casing and beneath the lowermost combination disc 55, it being operated by an actuator 55 from either side of the lock.

Superimposed on the lowermost disc 55 are a number of discs 5?, 58, 59, 55, GI, 62 each provided with a radial notch 63 extending from the periphery toward the center and adapted to fit over the block 52 of the bolt.

The lowermost disc 55 is provided with an arcuate enlargement on its lower face to guide the bolt in its sliding movement. The disc 55 has a peripheral extension 64 which carries an upright projection 55. An opening in the inner end of the bolt, beneath the disc 55, has a cam notch, to loosely accommodate a latch operating member 66, and sleeved over the member 56 is a hub-like member fill of the disc 55. Each of the discs, with the exception of the uppermost, is provided with arcuate slots of various lengths near the periphery, while central bores for each disc serve to closely but loosely fit the discs over the hub member 61.

Likewise, adjacent the radial notch, one of each pair of discs is provided with a bored peripheral extension 65 to receive the pin 65 of the disc 55. The ring 69 has two opposite notches 70 in its inner face. As the application and construction of the actuator with the lock is exactly like that described with reference to Figsures 1-13 it is therefore deemed not necessary to describe it in detail here.

-In the lower end of the casing 50, is a sliding latch bolt H having a bevelled head to contact the escutcheon plate on the door frame. It is operated by the actuator 55 in the ordinaryhub i2 controlled by a pivoted lever l3 engaging the hub, which in turn actuates the inner pivoted end of the bevelled latch bolt H.

Having thus described the invention, what is claimed as new and desired to secure by Letters Patent, is:--,

1. A look comprising a casing, a bolt slidable therein, a series of superimposed tumbler discs, the lowermost disc attached to the casing, said bolt operating below the lowermost disc, an armate enlargement of the lower face of said disc, a cam member controlling said bolt, an actuator for said cam member, and a dial settable by said actuator.

2. A lock comprising a casing, a bolt slidable therein, a. series of superimposed tumbler discs, the lowermost disc attached to the casing, means on said disc for guiding said bolt, a cam member loosely seated in an opening of the bolt, a projecting hub member on said disc loosely fitting over saidcam member, an actuator fitting into said cam member, and a dial settable by said actuator.

3. A- lock comprising a, casing, a bolt slidable therein, a series of superimposed discs, the lowermost disc attached to the casing, an arcuate enlargement on the lower face of said disc to guide said bolt, a spring urging the bolt against said enlargement, a cam member loosely seated in a cam slot of the latch bolt, a projecting hub on said disc loosely fitting over said cam member, an actuator fitting said cam member, and a dial settable by said actuator.

4. A look comprising a casing, a bolt slidable therein, a series of superimposed tumbler discs, the lowermost being secured to the casing, said bolt movable below said disc, each of said discs having arcuate slots of unlike lengths and registrable radial slots, a block carried by said bolt to engage the radial slots when in register, a cam member having a hub extension,said member seated in a notch of the bolt, 2. projecting hub on said disc loosely fitting over said cam member, an actuator fitting into said'cam member, a slotted sleeve closely fitting over said actuator, said sleeve terminating in a flange having downturned projections, and a dial. settable by said actuator. 7

JOHN HEINZLE. 

